Antispeeding device for wire-drawing drums



Aug. 18, 1925. 1,550,292

6. E. TIDEMAN ANTISPEEDING DEVICE} FOR WIRE DRAWING DRUMS Filed Feb. 8, 19?,4 2 gusts-Sheet 1 Aug. 18, 1925'. r

C. E. TIDEMAN ANTISPEEDING DEVICE FOR WIRE DRAWING DRUMS Filed Feb. 8. 1924 2 Sheets-Sheet 2 I 1 MN raw mflu u n m m vNlW NM M K I. I In Patented Aug. 18, 192 5.

1,550,292 PATENT OFFICE.

CARL E. TIDEMAN, OF WORCESTER. MASSACHUSETTS, ASSIGNOR OI' ONE-FOURTH T ROBERT WILLIAMSON. ONE-FOURTH TO (IL-AV G. JOHNSON, AND ONE-FOURTH 'IO IVAR w. 1mm, ALL or woncns'rnn, m nssaonosarrs.

ANTISPEEDING DEVICE FOR WIRE-DRAWING DBU MS.

Application filed February 8, 1924. Serial No. 691,471.

To all whom it may concern:

Be it known that I. CARL E. TIDEMAN, a citizen of the United States, residing at Worcester, in the county of Worcester and tate of Massachusetts, have invented a new and useful Antispeeding Device for Wire-Drawing Drums, of which the following is a specification.

The principal object of this invention is to provide means for automatically preventing the speeding up of either the first or any other drum of a wire drawing machine when the Wire breaks or the last end comes through the die, so as to prevent the kinking and breaking of the wire; and also to provide this in a form in which it can be operated by the die itself automatically so that the operator will not have to attend to it.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a side view of a continuous wire drawing machine with a preferred embodiment of this invention applied thereto;

Fig. 2 is ahorizontal sectional view of the driving mechanism showing a plan of the first die and its supporting parts;

Fig. 3 is a front elevation of the automatic mechanism at the intake end ofthe machine, the bench being shown in section; Fig. 4 is an end view with the bench in section;

Fig. 5 is a sectional view onthe line 55 of Fig. 3, and

Fi 6 is atransverse sectional view on the line 66 of Fig. 5 illustrating the brake.

I have shown the machine as driven by a motor 8 constantly driving the main or driving shaft 10 through gearing 9. This shaft is always connected with the drawing machine by a gear or pinion 11 thereon meshing with the external .gear on the cage of the central differential 12 of the drawing machine. This differential may be of a well known type and is not illustrated in full detail. The cage runs continuously.

The differential 12 operates .two shafts 13 and 14 each connected by proper andusual gearing with the two intermediate drums D and D The shaft 13 extends to the first differential 15 which operates the first drum D and in turn is geared to an end shaft 19. The shaft 14 extends in the opposite direction to the third differential 16. In the same way that differential operates the winding drum D through another horizontal shaft and suitable gearing as usual. The four shafts 19, 13, 14 and 20-are shown in alignment although that is not essential to the features of this invention. -This method of connecting up the differentials is simple and convenient and with the proper gear ratios it provides the desired speeds for the several drums. When the machine is running and drawing wire on all four drums the wire enters at the left passing through the first die A and passing a few turns around each of the drums in succession and through the other dies A, A A.

Each of the dies or rather the holder therefor is mounted on the bench to slide back and forth. For this purpose the bench is provided with a longitudinal slot 22 for each die holder and the die holder is provided with a screw, bolt, or other guide 23 extending down through the slot and guidthe holder to move between two stops 24. A spring connected with the bolt normally pulls it back toward the entrance end of the machine but when the wire is being drawn through the die in the holder the pull on the wire holds the holder forward as shown in Fig. 3 against the front stop 24: which constitutes a solid wall for the wire to pull against.

When the last end of the wire passes through the die, or when the wire breaks between the die and the drum on which it is being drawn from the die, all the force tending to pull the die holder over into the position shown in Fig. 3 immediately disappears. Then the constant foroe of the spring 25 pulls the die holder back into contact with the other stop 24. This results in the lower end of the bolt 23 swinging an arm 26 over to the left as shown by the arrow. This arm is on a shaft 27 and normally kept in contact with the bottom of the bolt 23. On this shaft 27 is another arm 28 connected by a link 29 with an arm 30 fixed on a longitudinal brake shaft 31. This results in turning the shaft. On this shaft there is a square end 32 located between the arms 33 of a air of brake levers 34 on whi h re brake s oes 35 of wood or the like. A bolt and spring 36 tend to hold the arms 33 to ether in contact with the square part 32 of the shaft.

In the normal drawing condition the shaft is in theposition shown in Fig. 6 and the other parts are in the position shown in Figs. 3 and 4. Now when the die is released by the last end coming through it or by a break the spring pulls it back and the shaft 31 is turned so that the square end 32 is turned around 45 degrees or thereabouts to allow the arms 33 to be forced together by the spring 36. This allows the brake shoes to come against a drum 37 on the shaft 1!) and apply the brake to that shaft. This slows up the drum. D and prevents its rapid rotation. This avoids the shooting of the wire through rapidly and kinking. In this way the winding of the wire from the drum D through the next die A will be carried on at an ordinary moderate'speed and without the otherwise excessive feed of the wire to that die.

On the shaft 31 is a treadle 38 extending out through a hole in the frontqofthe bench. This treadle is pushed up into horizontal position by the action just specified. When it is desired to start the machine or to start that particular drum into normal speed, this treadle is pushed down which forces the die A over into contact with the front stop 2d and releases the brake shoes 35.

In this way the ordinary difficulty of these differential continuous wire drawing machines that has been described, is avoided. The passage of the loose end through any one of the dies or the breaking of the wire does not cause excessive feed by the next drum and the passage of too much wire from it to the die following. Therefore the kinking up of the wire at this point is avoided and the wire drawing process continues in the ordinary way all through the machine. This process is automatic, as described, and does not have to be attended toby the operator except to release the brake whenever the wire has passed through and it is time to string up again.

Each of the drumsis provided with independent mechanism of the same kind and the four treadles 38 are shown. The invention can, of course, be applied to a single drum.

Although I have illustrated and described the invention as applied to a particular form of differential continuous wire drawing machine,=I am aware of the fact that this is for illustrative purposes only and that it can beapplied to other types of drawing machines and that other changes can be made in the details of construction and arrangement of parts without departing from the scope of the invention'as expressed in the claims. Therefore, I do not wish to be limited to all the details of construction herein erated by the movement of the die bae shown and described but what I do claim is 1. In a continuous wire drawing machine, the combination with a series of shafts for operating the respective drums and dillerw for automatically resisting the speedlng up of the shaft operating that. drum whenever the end of the wire passes through the end of the die or the wire is broken beyond that die without disconnecting the shaft from the power.

2. In a continuous wire drawing machine, the combination with a series of shafts arranged in alignment, a series of differentials connecting said shafts and a corresponding series of drawing drums each connected positively with one of said shafts, of a series of freely movable dies each for delivering wire to one of said drums, a stop between each die and its drum against which the die is held by the force of the wire beingdrawn through it, yielding means for drawing the die back whenever that force is removed, a shaft positively connected with the drum, a brake for the last named shaft, and means operated by the movement of the die backwardly for applying the brake yieldingly to the shaft.

3. In a wire drawing machine, the combination with a wire drawing drum and a movable die arranged to deliver wire thereto, of a shaft positively connected with the drum for operating it, a brake drum on said shaft, a brake associated with said brake drum for applying a resistance to the rotation of said shaft, a brake shaft for operating the brake, and means connected with said die for turning the brake shaft when the dieis' released from the strain of the wire and applying the brake.

4. In a wire drawing machine, the combination with a power driven shaft and a drawing drum connected therewith to be operated thereby, of a movable die for deliv'ering wire to the drum, a stop against which the pull of the Wire holds the die in operation, a'spring for drawing the die back when the pull of the wire is released, a brake shaft, means arranged to be opwardly under the influence of the spring for turning said brake shaft, a brake located on the brake shaft for resisting the rotation of the. first named shaft when the brake shaft is turned by the spring and die and a treadle on said brake shaft for turn- 

